GB1078486A - Improvements in or relating to a differential amplifier - Google Patents

Improvements in or relating to a differential amplifier

Info

Publication number
GB1078486A
GB1078486A GB2822265A GB2822265A GB1078486A GB 1078486 A GB1078486 A GB 1078486A GB 2822265 A GB2822265 A GB 2822265A GB 2822265 A GB2822265 A GB 2822265A GB 1078486 A GB1078486 A GB 1078486A
Authority
GB
United Kingdom
Prior art keywords
temperature
amplifier
transistors
july
vary
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB2822265A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Jeumont Schneider SA
Original Assignee
Jeumont Schneider SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Jeumont Schneider SA filed Critical Jeumont Schneider SA
Publication of GB1078486A publication Critical patent/GB1078486A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
    • H03F1/30—Modifications of amplifiers to reduce influence of variations of temperature or supply voltage or other physical parameters
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/45—Differential amplifiers
    • H03F3/45071—Differential amplifiers with semiconductor devices only
    • H03F3/45479—Differential amplifiers with semiconductor devices only characterised by the way of common mode signal rejection
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2203/00—Indexing scheme relating to amplifiers with only discharge tubes or only semiconductor devices as amplifying elements covered by H03F3/00
    • H03F2203/45—Indexing scheme relating to differential amplifiers
    • H03F2203/45022—One or more added resistors to the amplifying transistors in the differential amplifier
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2203/00—Indexing scheme relating to amplifiers with only discharge tubes or only semiconductor devices as amplifying elements covered by H03F3/00
    • H03F2203/45—Indexing scheme relating to differential amplifiers
    • H03F2203/45048—Calibrating and standardising a dif amp
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2203/00—Indexing scheme relating to amplifiers with only discharge tubes or only semiconductor devices as amplifying elements covered by H03F3/00
    • H03F2203/45—Indexing scheme relating to differential amplifiers
    • H03F2203/45202—Indexing scheme relating to differential amplifiers the differential amplifier contains only resistors in the load
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2203/00—Indexing scheme relating to amplifiers with only discharge tubes or only semiconductor devices as amplifying elements covered by H03F3/00
    • H03F2203/45—Indexing scheme relating to differential amplifiers
    • H03F2203/45471—Indexing scheme relating to differential amplifiers the CSC comprising one or more extra current sources

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Amplifiers (AREA)

Abstract

1,078,486. Temperature - compensated differential amplifiers. SOCIETE DE CONSTRUCTIONS ELECTROMECANIQUES JEUMONTSCHNEIDER. July 2, 1965 [July 2, 1964], No. 28222/65. Heading H3T. A temperature compensation arrangement for a differential amplifier T 1 T 2 comprises two auxiliary transistors T 3 T 4 each of which passes the emitter-collector current of both amplifier transistors, and a temperature-sensitive bias supply for T 3 and T 4 so that the currents through these transistors vary in opposite sense with change of temperature. By adjustment of the potentiometer taps 5, 6 the emitter currents of T 1 and T 2 can be made to vary with temperature in such a way as to compensate for baseemitter voltage variations. The bias supply for T 3 and T 4 comprises a bridge network 10-13 having normal resistors 10, 13 and temperaturevariable resistors 11, 12 with voltage supplies 15 (e.g. + 24 v.) and 7 (e.g. - 24 v.). The amplifier is powered by a further supply U.
GB2822265A 1964-07-02 1965-07-02 Improvements in or relating to a differential amplifier Expired GB1078486A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR980453A FR1408341A (en) 1964-07-02 1964-07-02 Differential amplifier

Publications (1)

Publication Number Publication Date
GB1078486A true GB1078486A (en) 1967-08-09

Family

ID=8833748

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2822265A Expired GB1078486A (en) 1964-07-02 1965-07-02 Improvements in or relating to a differential amplifier

Country Status (6)

Country Link
BE (1) BE662329A (en)
DE (1) DE1246821B (en)
FR (1) FR1408341A (en)
GB (1) GB1078486A (en)
LU (1) LU48644A1 (en)
NL (1) NL6507178A (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3522548A (en) * 1968-05-03 1970-08-04 Rca Corp Temperature tracking of emitter coupled differential amplifier stage
GB1298124A (en) * 1969-05-01 1972-11-29 Sony Corp Transistor circuits
US4438920A (en) * 1982-08-11 1984-03-27 Pierre Veillette Exercise device
US4725791A (en) * 1986-09-18 1988-02-16 Motorola, Inc. Circuit utilizing resistors trimmed by metal migration
US4772857A (en) * 1987-02-17 1988-09-20 Thiel James E Amplifying circuit
DE69229731T2 (en) * 1992-09-16 1999-12-23 Stmicroelectronics S.R.L., Agrate Brianza Transconductance differential amplifier dynamically controlled by the input signal

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1235618A (en) * 1958-06-30 1960-07-08 Ibm Common reaction circuits
CH371148A (en) * 1958-07-08 1963-08-15 Regulator Ag Circuit arrangement with a transistor operated in a collector circuit

Also Published As

Publication number Publication date
LU48644A1 (en) 1965-07-20
NL6507178A (en) 1966-01-03
BE662329A (en) 1965-08-02
DE1246821B (en) 1967-08-10
FR1408341A (en) 1965-08-13

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